<template>
  <div style="position: relative">
    <div
      v-if="type === '2'"
      :style="{ height: parseInt(setSize.imgHeight) + vSpace + 'px' }"
      class="verify-img-out"
    >
      <div
        :style="{ width: setSize.imgWidth, height: setSize.imgHeight }"
        class="verify-img-panel"
      >
        <img
          :src="'data:image/png;base64,' + backImgBase"
          alt=""
          style="width: 100%; height: 100%; display: block"
        />
        <div
          v-show="showRefresh"
          class="verify-refresh"
          @click="refresh"
        >
          <i class="iconfont icon-refresh"></i>
        </div>
        <transition name="tips">
          <span
            v-if="tipWords"
            :class="passFlag ? 'suc-bg' : 'err-bg'"
            class="verify-tips"
          >
            {{ tipWords }}
          </span>
        </transition>
      </div>
    </div>
    <!-- 公共部分 -->
    <div
      :style="{ width: setSize.imgWidth, height: barSize.height, 'line-height': barSize.height }"
      class="verify-bar-area"
    >
      <span
        class="verify-msg"
        v-text="text"
      ></span>
      <div
        :style="{
          width: leftBarWidth !== undefined ? leftBarWidth : barSize.height,
          height: barSize.height,
          'border-color': leftBarBorderColor,
          transaction: transitionWidth
        }"
        class="verify-left-bar"
      >
        <span
          class="verify-msg"
          v-text="finishText"
        ></span>
        <div
          :style="{
            width: barSize.height,
            height: barSize.height,
            'background-color': moveBlockBackgroundColor,
            left: moveBlockLeft,
            transition: transitionLeft
          }"
          class="verify-move-block"
          @mousedown="start"
          @touchstart="start"
        >
          <i
            :class="['verify-icon iconfont', iconClass]"
            :style="{ color: iconColor }"
          ></i>
          <div
            v-if="type === '2'"
            :style="{
              width: Math.floor((parseInt(setSize.imgWidth) * 47) / 310) + 'px',
              height: setSize.imgHeight,
              top: '-' + (parseInt(setSize.imgHeight) + vSpace) + 'px',
              'background-size': setSize.imgWidth + ' ' + setSize.imgHeight
            }"
            class="verify-sub-block"
          >
            <img
              :src="'data:image/png;base64,' + blockBackImgBase"
              alt=""
              style="width: 100%; height: 100%; display: block; -webkit-user-drag: none"
            />
          </div>
        </div>
      </div>
    </div>
  </div>
</template>
<script type="text/babel">
/**
 * VerifySlide
 * @description 滑块
 * */
import { aesEncrypt } from "./../utils/ase";
import { resetSize } from "./../utils/util";
import { reqCheck, reqGet } from "./../api/index";
import { computed, getCurrentInstance, nextTick, onMounted, reactive, ref, toRefs, watch } from "vue";
//  "captchaType":"blockPuzzle",
export default {
  name: "VerifySlide",
  props: {
    captchaType: {
      type: String
    },
    type: {
      type: String,
      default: "1"
    },
    //弹出式pop，固定fixed
    mode: {
      type: String,
      default: "fixed"
    },
    vSpace: {
      type: Number,
      default: 5
    },
    explain: {
      type: String,
      default: "向右滑动完成验证"
    },
    imgSize: {
      type: Object,
      default() {
        return {
          width: "310px",
          height: "155px"
        };
      }
    },
    blockSize: {
      type: Object,
      default() {
        return {
          width: "50px",
          height: "50px"
        };
      }
    },
    barSize: {
      type: Object,
      default() {
        return {
          width: "310px",
          height: "40px"
        };
      }
    }
  },
  setup(props, context) {
    const { mode, captchaType, vSpace, imgSize, barSize, type, blockSize, explain } = toRefs(props);
    const { proxy } = getCurrentInstance();
    let secretKey = ref(""), //后端返回的ase加密秘钥
      passFlag = ref(""), //是否通过的标识
      backImgBase = ref(""), //验证码背景图片
      blockBackImgBase = ref(""), //验证滑块的背景图片
      backToken = ref(""), //后端返回的唯一token值
      startMoveTime = ref(""), //移动开始的时间
      endMovetime = ref(""), //移动结束的时间
      tipsBackColor = ref(""), //提示词的背景颜色
      tipWords = ref(""),
      text = ref(""),
      finishText = ref(""),
      setSize = reactive({
        imgHeight: 0,
        imgWidth: 0,
        barHeight: 0,
        barWidth: 0
      }),
      top = ref(0),
      left = ref(0),
      moveBlockLeft = ref(undefined),
      leftBarWidth = ref(undefined),
      // 移动中样式
      moveBlockBackgroundColor = ref(undefined),
      leftBarBorderColor = ref("#ddd"),
      iconColor = ref(undefined),
      iconClass = ref("icon-right"),
      status = ref(false), //鼠标状态
      isEnd = ref(false), //是够验证完成
      showRefresh = ref(true),
      transitionLeft = ref(""),
      transitionWidth = ref(""),
      startLeft = ref(0);

    const barArea = computed(() => {
      return proxy.$el.querySelector(".verify-bar-area");
    });

    function init() {
      text.value = explain.value;
      getPictrue();
      nextTick(() => {
        let { imgHeight, imgWidth, barHeight, barWidth } = resetSize(proxy);
        setSize.imgHeight = imgHeight;
        setSize.imgWidth = imgWidth;
        setSize.barHeight = barHeight;
        setSize.barWidth = barWidth;
        proxy.$parent.$emit("ready", proxy);
      });

      window.removeEventListener("touchmove", function (e) {
        move(e);
      });
      window.removeEventListener("mousemove", function (e) {
        move(e);
      });

      //鼠标松开
      window.removeEventListener("touchend", function () {
        end();
      });
      window.removeEventListener("mouseup", function () {
        end();
      });

      window.addEventListener("touchmove", function (e) {
        move(e);
      });
      window.addEventListener("mousemove", function (e) {
        move(e);
      });

      //鼠标松开
      window.addEventListener("touchend", function () {
        end();
      });
      window.addEventListener("mouseup", function () {
        end();
      });
    }

    watch(type, () => {
      init();
    });
    onMounted(() => {
      // 禁止拖拽
      init();
      proxy.$el.onselectstart = function () {
        return false;
      };
    });

    //鼠标按下
    function start(e) {
      e = e || window.event;
      if (!e.touches) {
        //兼容PC端
        var x = e.clientX;
      } else {
        //兼容移动端
        var x = e.touches[0].pageX;
      }
      console.log(barArea);
      startLeft.value = Math.floor(x - barArea.value.getBoundingClientRect().left);
      startMoveTime.value = +new Date(); //开始滑动的时间
      if (isEnd.value == false) {
        text.value = "";
        moveBlockBackgroundColor.value = "#337ab7";
        leftBarBorderColor.value = "#337AB7";
        iconColor.value = "#fff";
        e.stopPropagation();
        status.value = true;
      }
    }

    //鼠标移动
    function move(e) {
      e = e || window.event;
      if (status.value && isEnd.value == false) {
        if (!e.touches) {
          //兼容PC端
          var x = e.clientX;
        } else {
          //兼容移动端
          var x = e.touches[0].pageX;
        }
        var bar_area_left = barArea.value.getBoundingClientRect().left;
        var move_block_left = x - bar_area_left; //小方块相对于父元素的left值
        if (move_block_left >= barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2) {
          move_block_left = barArea.value.offsetWidth - parseInt(parseInt(blockSize.value.width) / 2) - 2;
        }
        if (move_block_left <= 0) {
          move_block_left = parseInt(parseInt(blockSize.value.width) / 2);
        }
        //拖动后小方块的left值
        moveBlockLeft.value = move_block_left - startLeft.value + "px";
        leftBarWidth.value = move_block_left - startLeft.value + "px";
      }
    }

    //鼠标松开
    function end() {
      endMovetime.value = +new Date();
      //判断是否重合
      if (status.value && isEnd.value == false) {
        var moveLeftDistance = parseInt((moveBlockLeft.value || "").replace("px", ""));
        moveLeftDistance = (moveLeftDistance * 310) / parseInt(setSize.imgWidth);
        let data = {
          captchaType: captchaType.value,
          pointJson: secretKey.value
            ? aesEncrypt(JSON.stringify({ x: moveLeftDistance, y: 5.0 }), secretKey.value)
            : JSON.stringify({ x: moveLeftDistance, y: 5.0 }),
          token: backToken.value
        };
        reqCheck(data).then(res => {
          if (res.repCode == "0000") {
            moveBlockBackgroundColor.value = "#5cb85c";
            leftBarBorderColor.value = "#5cb85c";
            iconColor.value = "#fff";
            iconClass.value = "icon-check";
            showRefresh.value = false;
            isEnd.value = true;
            if (mode.value == "pop") {
              setTimeout(() => {
                proxy.$parent.clickShow = false;
                refresh();
              }, 1500);
            }
            passFlag.value = true;
            tipWords.value = `${((endMovetime.value - startMoveTime.value) / 1000).toFixed(2)}s验证成功`;
            var captchaVerification = secretKey.value
              ? aesEncrypt(backToken.value + "---" + JSON.stringify({ x: moveLeftDistance, y: 5.0 }), secretKey.value)
              : backToken.value + "---" + JSON.stringify({ x: moveLeftDistance, y: 5.0 });
            setTimeout(() => {
              tipWords.value = "";
              proxy.$parent.closeBox();
              proxy.$parent.$emit("success", { captchaVerification });
            }, 1000);
          } else {
            moveBlockBackgroundColor.value = "#d9534f";
            leftBarBorderColor.value = "#d9534f";
            iconColor.value = "#fff";
            iconClass.value = "icon-close";
            passFlag.value = false;
            setTimeout(function () {
              refresh();
            }, 1000);
            proxy.$parent.$emit("error", proxy);
            tipWords.value = "验证失败";
            setTimeout(() => {
              tipWords.value = "";
            }, 1000);
          }
        });
        status.value = false;
      }
    }

    const refresh = () => {
      showRefresh.value = true;
      finishText.value = "";

      transitionLeft.value = "left .3s";
      moveBlockLeft.value = 0;

      leftBarWidth.value = undefined;
      transitionWidth.value = "width .3s";

      leftBarBorderColor.value = "#ddd";
      moveBlockBackgroundColor.value = "#fff";
      iconColor.value = "#000";
      iconClass.value = "icon-right";
      isEnd.value = false;

      getPictrue();
      setTimeout(() => {
        transitionWidth.value = "";
        transitionLeft.value = "";
        text.value = explain.value;
      }, 300);
    };

    // 请求背景图片和验证图片
    function getPictrue() {
      let data = {
        captchaType: captchaType.value
      };
      reqGet(data).then(res => {
        if (res.repCode == "0000") {
          backImgBase.value = res.repData.originalImageBase64;
          blockBackImgBase.value = res.repData.jigsawImageBase64;
          backToken.value = res.repData.token;
          secretKey.value = res.repData.secretKey;
        } else {
          tipWords.value = res.repMsg;
        }
      });
    }

    return {
      secretKey, //后端返回的ase加密秘钥
      passFlag, //是否通过的标识
      backImgBase, //验证码背景图片
      blockBackImgBase, //验证滑块的背景图片
      backToken, //后端返回的唯一token值
      startMoveTime, //移动开始的时间
      endMovetime, //移动结束的时间
      tipsBackColor, //提示词的背景颜色
      tipWords,
      text,
      finishText,
      setSize,
      top,
      left,
      moveBlockLeft,
      leftBarWidth,
      // 移动中样式
      moveBlockBackgroundColor,
      leftBarBorderColor,
      iconColor,
      iconClass,
      status, //鼠标状态
      isEnd, //是够验证完成
      showRefresh,
      transitionLeft,
      transitionWidth,
      barArea,
      refresh,
      start
    };
  }
};
</script>
